The process illustrated in Figure 5-2 is called:
a. facilitated diffusion.
b. pinocytosis.
c. cotransport.
d. lysis.
e. exocytosis
E
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Electromagnetic energy of which of the
following wavelengths can damage DNA?
a. 300 micrometers b. 300 centimeters c. 300 nanometers d. 300 millimeters e. 300 meters
People tend to crave sweet and salty foods, but dislike bitter foods. What is the evolutionary
explanation for this? What will be an ideal response?
Assume the trait for brown eyes is completely dominant to blue eyes and this trait is controlled by a single gene. If 400 people in a population of 10,000 have blue eyes, how many people would be expected to be heterozygous for this trait? (Hint: Use the Hardy-Weinberg formula.)
a. 8,000 b. 5,400 c. 3,200 d. 960 e. 320
Nonsense codons are
A) codons that code for multiple amino acids. B) codons that do not code for an amino acid. C) codons that can be read forward or backward. D) start codons.